201603355240 has 128 divisors (see below), whose sum is σ = 538339737600. Its totient is φ = 66490410240.

The previous prime is 201603355229. The next prime is 201603355243. The reversal of 201603355240 is 42553306102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (201603355243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1380021 + ... + 1519099.

It is an arithmetic number, because the mean of its divisors is an integer number (4205779200).

Almost surely, 2^201603355240 is an apocalyptic number.

201603355240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201603355240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269169868800).

201603355240 is an abundant number, since it is smaller than the sum of its proper divisors (336736382360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201603355240 is a wasteful number, since it uses less digits than its factorization.

201603355240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139295 (or 139291 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The spelling of 201603355240 in words is "two hundred one billion, six hundred three million, three hundred fifty-five thousand, two hundred forty".